Question

The electric field due to a dipole at a distance r on its axis is

• A. Directly proportional to $r^3$
• B. Inversely proportional to $r^3$
• C. Directly proportional to $r^2$
• D. Inversely proportional to $r^2$

Answer 1

The correct option is B Inversely proportional to $r^3$

$E=\frac{1}{4\pi {ϵ}_0}.\frac{2p}{r^3}$